“无菌”造句

尿液是无菌的。
Urine is sterile.

这个盖子严实地盖在奶瓶上,保持奶嘴无菌.
This top fits over the bottle and keeps the teat sterile.

手术室应该是个无菌的环境.
An operating theatre should be a sterile environment.

• #无菌